Learn more about nerve impulse transmission within a neuron: action potential in the Boundless open textbook. Signals are transmitted from neuron to neuron via an action potential, when the axon membrane rapidly depolarizes and repolarizes.

Sodium-Channel Blockers (Class I Antiarrhythmics)

This diagram shows how sodium and potassium ions are pumped through protein channels. The sodium ions are pumped out of the cell, while potassium is pumped into the cell. The movement of these ions creates resting potential and action potential.